Answers for "find columns with nan pandas"

dataframe find nan rows

df[df.isnull().any(axis=1)]

find nan values in a column pandas

df.isnull().values.any()

find nan values in a column pandas

df['your column name'].isnull().sum()

Pandas Get Column Names With NaN

df.isna().any()

find nan values in a column pandas

df.isnull().sum().sum()

show which columns in dataframe have NA

In [71]: df
Out[71]:
     a    b  c
0  NaN  7.0  0
1  0.0  NaN  4
2  2.0  NaN  4
3  1.0  7.0  0
4  1.0  3.0  9
5  7.0  4.0  9
6  2.0  6.0  9
7  9.0  6.0  4
8  3.0  0.0  9
9  9.0  0.0  1

In [72]: df.isna().any()
Out[72]:
a     True
b     True
c    False
dtype: bool